Error starting homebanking applet with icedtea-7-plugin

To reproduce:

First make sure you are using java7 and icedtea-7-plugin with
sudo update-alternatives --config java
and choose /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java
and
sudo update-alternatives --config mozilla-javaplugin.so
and choose /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/IcedTeaPlugin.so

Then Starting firefox from command line (important) and the visit
When visiting https://www.netbank.nordea.dk/netbank/index.jsp

Then the firefox tab hangs and the console pukes with:

info: Error while loading localization: There is no localization file for your language.
java version "1.7.0_09"
OpenJDK Runtime Environment (IcedTea7 2.3.3) (7u9-2.3.3-0ubuntu1~12.10.1)
OpenJDK 64-Bit Server VM (build 23.2-b09, mixed mode)
Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 9: reading configurations from ~/.fonts.conf is deprecated.
JAR https://www.netbank.nordea.dk/unibankhtml/cbt/nordeaMACnew.jar not found. Continuing.
netx: Initialization Error: Could not initialize applet. (com.ibm.cbt.thinclient.netbank.LogonApplet)
netx: Initialization Error: Could not initialize applet. (com.ibm.cbt.thinclient.netbank.LogonApplet)
net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could not initialize applet.
        at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:735)
        at net.sourceforge.jnlp.Launcher.getApplet(Launcher.java:676)
        at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:886)
Caused by: java.lang.ClassNotFoundException: com.ibm.cbt.thinclient.netbank.LogonApplet
        at net.sourceforge.jnlp.runtime.JNLPClassLoader.loadClass(JNLPClassLoader.java:1609)
        at net.sourceforge.jnlp.Launcher.createApplet(Launcher.java:725)
        ... 2 more
java.lang.NullPointerException
        at net.sourceforge.jnlp.NetxPanel.runLoader(NetxPanel.java:154)
        at sun.applet.AppletPanel.run(AppletPanel.java:379)
        at java.lang.Thread.run(Thread.java:722)
java.lang.NullPointerException
        at sun.applet.AppletPanel.run(AppletPanel.java:429)
        at java.lang.Thread.run(Thread.java:722)

This does not happend when you choose java6 and icedtea-6-plugin

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: icedtea-7-plugin 1.3-1ubuntu1.1
ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
Uname: Linux 3.5.0-18-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
Date: Tue Nov 20 22:10:50 2012
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-10-18 (399 days ago)
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=
 TERM=xterm
 PATH=(custom, no user)
 LANG=da_DK.UTF-8
 SHELL=/bin/tcsh
SourcePackage: icedtea-web
UpgradeStatus: Upgraded to quantal on 2012-11-10 (10 days ago)